The one about the guy who looks like a big blue bird and the other one who dresses like a flying rat?
The one that costs like a godzillion dollars and could potentially kill off an entire brand/franchise for the studio if it tanks? Whose failure could potentially decimate a whole subgenre of movies?
The one that's due
next summer in about a year and a half and has been filming since some time in October?
Yeah, the script's not done yet. Seeya in July
EDIT: Okay, I messed up the release date. But even so, starting production on this kind of thing without a script is a recipe for disaster and catastrophe. A disastrophe, if you will.